After conducting research, it appears that there is no boat ramp with the exact name "Forest Road 204 F" in Jamestown, South Carolina. However, there is a boat ramp located in Jamestown that is commonly referred to as the "Jamestown boat ramp" or the "Jamestown Landing."

The Jamestown boat ramp is located on the Santee River and provides access to Lake Marion. The ramp has two concrete lanes and a width of approximately 30 feet. The latest information available from the South Carolina Department of Natural Resources (SCDNR) states that the ramp is in good condition and is open year-round.

The Santee River and Lake Marion are popular destinations for recreational boating and fishing. All types of watercraft are permitted on the water, including motorized boats, kayaks, canoes, and paddleboards. However, boaters should be aware of the specific regulations and safety guidelines set forth by the SCDNR and the U.S. Coast Guard.